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Record W2004472940 · doi:10.1109/mwsym.2007.380293

A Twin Toroid Ferrite Phase Shifter

2007· article· en· W2004472940 on OpenAlexaff
Ali Abuelmaatti, I.U. Khairuddin, A.A.P. Gibson, I. Morgan, Arthur Haigh

Bibliographic record

VenueIEEE MTT-S International Microwave Symposium digest · 2007
Typearticle
Languageen
FieldEngineering
TopicMicrowave Engineering and Waveguides
Canadian institutionsCOM DEV International
Fundersnot available
KeywordsPhase shift moduleFerrite (magnet)ToroidMaterials scienceReturn lossFerrite coreInsertion lossMicrowaveFinite element methodInductorElectrical engineeringOptoelectronicsPlasmaPhysicsComposite materialEngineeringElectromagnetic coilTelecommunicationsStructural engineeringVoltage

Abstract

fetched live from OpenAlex

Ferrite phase shift and control components designed with low reluctance magnetic bias circuits help to reduce space, weight and energy consumption in microwave systems. Avoiding air-gaps is essential and one suitable geometrical arrangement is the toroidal shaped ferrite positioned inside a rectangular waveguide. A finite element method is presented to model the nonuniform magnetization and partially magnetized state of this type of phase shifter. Using a viscous plastic processing (VPP) method, homogeneous ferrite toroids are fabricated and a twin toroidal phase shifter is designed, assembled and tested. The insertion loss was less than 1 dB over the 9.5 GHz to 10.3 GHz band and return loss of 20 dB was achievable. The phase shift calculation agrees to within 10% of the measured values.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.248
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.248
Teacher spread0.239 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations6
Published2007
Admission routes1
Has abstractyes

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